24x25x1 MERV 14 AC Furnace Filters 6 Pack spl_hrg NPK: 1-3-6

NPK: 1-3-6

The improved spectral response increases the accuracy of LED measurements

*Recommend introducing Far Red light for 15mins after day cycle

It will not harm most beneficials

ACTUAL MEASUREMENTS: 4'-9'' x 4'-9'' x 6'-7''

24x25x1 MERV 14 AC Furnace Filters 6 Pack spl_hrg NPK: 1-3-6Nordic Pure MERV 14 Pleated AC Furnace Air Filters provide exceptional filtration for both home and commercial environments. Each time air passes through a Nordic Pure pleated furnace air filter, lint, dust, pollen, bacteria, pet dander, dust mites, mold spores, smoke particles, virus carriers, coughs and sneezes, smog, allergens and other contaminants are removed. MERV 14 furnace filters are comparable to HVAC filters with the rating of MPR 2800.